```html
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    <title>删除链表的倒数第 N 个节点 | 算法解析</title>
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    <!-- Hero Section -->
    <section class="hero-gradient text-white py-20 px-6">
        <div class="max-w-4xl mx-auto text-center">
            <h1 class="text-4xl md:text-5xl font-bold mb-6 font-serif">删除链表的倒数第 N 个节点</h1>
            <p class="text-xl md:text-2xl opacity-90 mb-8 font-serif">高效解决链表操作的经典算法问题</p>
            <div class="inline-block bg-white bg-opacity-20 rounded-full px-6 py-2 text-sm font-medium">
                <i class="fas fa-code mr-2"></i>算法与数据结构
            </div>
        </div>
    </section>

    <!-- Content Section -->
    <section class="max-w-4xl mx-auto px-6 py-16">
        <!-- Problem Description -->
        <div class="mb-16">
            <div class="flex items-center mb-6">
                <div class="bg-blue-500 w-2 h-8 mr-4 rounded"></div>
                <h2 class="text-2xl md:text-3xl font-bold text-gray-800">题目描述</h2>
            </div>
            <div class="bg-white p-6 rounded-lg shadow-md card-hover">
                <p class="text-lg text-gray-700 mb-4">给定一个链表，删除链表的倒数第 <span class="highlight font-bold">n</span> 个节点，并返回链表的头节点。</p>
                <p class="text-gray-600 mb-2"><i class="fas fa-example-circle text-blue-500 mr-2"></i><strong>示例：</strong>输入链表 1→2→3→4→5 和 n = 2，删除倒数第二个节点后，链表变为 1→2→3→5。</p>
                <p class="text-gray-600"><i class="fas fa-check-circle text-green-500 mr-2"></i><strong>注意：</strong>给定的 n 总是有效的。</p>
            </div>
        </div>

        <!-- Algorithm Visualization -->
        <div class="mb-16">
            <div class="flex items-center mb-6">
                <div class="bg-purple-500 w-2 h-8 mr-4 rounded"></div>
                <h2 class="text-2xl md:text-3xl font-bold text-gray-800">算法可视化</h2>
            </div>
            <div class="bg-white p-6 rounded-lg shadow-md card-hover">
                <div class="mermaid">
                    graph LR
                    A[初始化dummy节点和快慢指针] --> B[快指针先走n步]
                    B --> C[快慢指针同时移动]
                    C --> D[快指针到达末尾]
                    D --> E[慢指针指向目标前驱节点]
                    E --> F[执行删除操作]
                    F --> G[返回dummy.next]
                </div>
                <p class="mt-4 text-gray-600"><i class="fas fa-lightbulb text-yellow-500 mr-2"></i>快慢指针法巧妙地通过双指针的步长差找到倒数第n个节点，只需一次遍历即可完成操作。</p>
            </div>
        </div>

        <!-- Core Algorithm -->
        <div class="mb-16">
            <div class="flex items-center mb-6">
                <div class="bg-green-500 w-2 h-8 mr-4 rounded"></div>
                <h2 class="text-2xl md:text-3xl font-bold text-gray-800">核心算法与解题思路</h2>
            </div>
            <div class="bg-white p-6 rounded-lg shadow-md card-hover">
                <div class="flex items-start mb-6">
                    <div class="bg-blue-100 p-3 rounded-full mr-4">
                        <i class="fas fa-bolt text-blue-500 text-xl"></i>
                    </div>
                    <div>
                        <h3 class="text-xl font-bold text-gray-800 mb-2">快慢指针法</h3>
                        <p class="text-gray-700">使用快慢指针，快指针先走 n 步，然后快慢指针同时移动，当快指针到达末尾，慢指针指向倒数第 n 个节点的前一个节点，执行删除。</p>
                    </div>
                </div>
                <div class="grid md:grid-cols-2 gap-6">
                    <div>
                        <h4 class="font-bold text-gray-800 mb-3"><i class="fas fa-stopwatch text-red-500 mr-2"></i>时间复杂度分析</h4>
                        <div class="bg-gray-100 p-4 rounded-lg">
                            <p class="text-gray-700">O(n)</p>
                            <p class="text-sm text-gray-500">只需要一次遍历链表即可完成操作</p>
                        </div>
                    </div>
                    <div>
                        <h4 class="font-bold text-gray-800 mb-3"><i class="fas fa-memory text-indigo-500 mr-2"></i>空间复杂度分析</h4>
                        <div class="bg-gray-100 p-4 rounded-lg">
                            <p class="text-gray-700">O(1)</p>
                            <p class="text-sm text-gray-500">只需要常数级别的额外空间</p>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Example Code -->
        <div class="mb-16">
            <div class="flex items-center mb-6">
                <div class="bg-orange-500 w-2 h-8 mr-4 rounded"></div>
                <h2 class="text-2xl md:text-3xl font-bold text-gray-800">示例代码</h2>
            </div>
            <div class="bg-white rounded-lg shadow-md overflow-hidden card-hover">
                <div class="bg-gray-800 px-4 py-2 flex items-center">
                    <div class="flex space-x-2">
                        <div class="w-3 h-3 rounded-full bg-red-500"></div>
                        <div class="w-3 h-3 rounded-full bg-yellow-500"></div>
                        <div class="w-3 h-3 rounded-full bg-green-500"></div>
                    </div>
                    <span class="text-white text-sm ml-4">Python 实现</span>
                </div>
                <div class="p-6 code-block">
                    <pre class="overflow-x-auto"><code class="text-white">
class ListNode:
    def __init__(self, val=0, next=None):
        self.val = val
        self.next = next

def removeNthFromEnd(head, n):
    dummy = ListNode(0)
    dummy.next = head
    fast = slow = dummy
    for _ in range(n):
        fast = fast.next
    while fast.next:
        fast = fast.next
        slow = slow.next
    slow.next = slow.next.next
    return dummy.next
                    </code></pre>
                </div>
            </div>
            <div class="mt-6 bg-blue-50 p-4 rounded-lg">
                <h4 class="font-bold text-blue-800 mb-2"><i class="fas fa-info-circle text-blue-500 mr-2"></i>代码说明</h4>
                <p class="text-blue-700">1. 使用dummy节点处理删除头节点的特殊情况<br>
                2. 快指针先移动n步，创建与慢指针之间的间隔<br>
                3. 同时移动快慢指针直到快指针到达末尾<br>
                4. 此时慢指针指向要删除节点的前驱节点<br>
                5. 执行删除操作并返回dummy.next</p>
            </div>
        </div>

        <!-- Application Scenario -->
        <div>
            <div class="flex items-center mb-6">
                <div class="bg-red-500 w-2 h-8 mr-4 rounded"></div>
                <h2 class="text-2xl md:text-3xl font-bold text-gray-800">应用场景</h2>
            </div>
            <div class="grid md:grid-cols-2 gap-6">
                <div class="bg-white p-6 rounded-lg shadow-md card-hover">
                    <div class="flex items-center mb-4">
                        <div class="bg-indigo-100 p-2 rounded-full mr-3">
                            <i class="fas fa-laptop-code text-indigo-500"></i>
                        </div>
                        <h3 class="text-xl font-bold text-gray-800">面试准备</h3>
                    </div>
                    <p class="text-gray-700">这是算法面试中的高频题目，考察对链表操作和双指针技巧的掌握程度，是程序员面试必备经典算法。</p>
                </div>
                <div class="bg-white p-6 rounded-lg shadow-md card-hover">
                    <div class="flex items-center mb-4">
                        <div class="bg-green-100 p-2 rounded-full mr-3">
                            <i class="fas fa-project-diagram text-green-500"></i>
                        </div>
                        <h3 class="text-xl font-bold text-gray-800">实际应用</h3>
                    </div>
                    <p class="text-gray-700">在需要高效处理链表数据结构的场景中，如内存管理、文件系统等，类似算法有广泛应用。</p>
                </div>
            </div>
        </div>
    </section>

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```